Vanguard reports 5.25% stake in Masterbrand (MBC) via Schedule 13G

Rhea-AI Filing Summary

Masterbrand Inc reports a Schedule 13G showing Vanguard Capital Management beneficially owns 5.25% of common stock, equal to 6,705,627 shares.

The filing states Vanguard has sole dispositive power over 6,705,627 shares and sole voting power over 980,135 shares. The disclosure attributes holdings to Vanguard Capital Management and affiliated Vanguard entities. The signature is dated 04/30/2026.

Insights

Institutional Ownership Analyst

Vanguard reports a passive >5% stake in Masterbrand (MBC).

The Schedule 13G shows 6,705,627 shares representing 5.25% beneficial ownership as reported. The filing lists sole dispositive power for Vanguard and identifies affiliated Vanguard entities that exercise voting or dispositive authority.

Ownership at this scale is typical of large index/asset managers; subsequent Form 13D would be required only if activism or intent to influence arose. Future filings will show changes in stake or voting arrangements.

Regulatory Compliance Specialist

Disclosure follows Schedule 13G passive-investor reporting conventions.

The form identifies the reporting person, CUSIP 57638P104, and provides the breakdown: sole voting power 980,135 and sole dispositive power 6,705,627. The filing cites SEC Release No. 34-39538 to explain aggregation across Vanguard affiliates.

Material compliance points: the filing is signed and dated 04/30/2026. Changes in ownership or intent to influence would require different reporting (e.g., Form 13D).

Key Figures

Beneficial ownership: 6,705,627 shares Percent of class: 5.25% Sole voting power: 980,135 shares +3 more

6 metrics

Beneficial ownership 6,705,627 shares Schedule 13G reported amount

Percent of class 5.25% Percent of common stock beneficially owned

Sole voting power 980,135 shares Number with sole power to vote

Sole dispositive power 6,705,627 shares Number with sole power to dispose

CUSIP 57638P104 Issuer's CUSIP as listed

Filing signature date 04/30/2026 Signature date on Schedule 13G

Key Terms

Schedule 13G, Beneficially owned, Dispositive power, Sole voting power

4 terms

Schedule 13G regulatory

"Name of form: Schedule 13G and Item references"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

Beneficially owned regulatory

"Amount beneficially owned: 6705627"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Dispositive power regulatory

"Sole power to dispose or to direct the disposition of: 6705627"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

Sole voting power regulatory

"Sole power to vote or to direct the vote: 980135"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Masterbrand Inc

(Name of Issuer)

Common Stock

(Title of Class of Securities)

57638P104

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 57638P104

1

Names of Reporting Persons

Vanguard Capital Management

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 980,135.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 6,705,627.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

6,705,627.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

5.25 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by Vanguard Capital Management LLC and the following affiliates of Vanguard Capital Management LLC or business divisions of such affiliates: Vanguard Asset Management Limited, Vanguard Fiduciary Trust Company, Vanguard Global Advisers, LLC and Vanguard Investments Australia Ltd. This Schedule 13G includes securities held by Vanguard funds, or sleeves thereof, over which Vanguard Capital Management LLC exercises dispositive power, in addition to securities held by clients over which the affiliates or business divisions of such affiliates indicated above exercise dispositive and/or voting power. This Schedule 13G does not include securities, if any, beneficially owned by other subsidiaries or affiliates of Vanguard Capital Management LLC, or business divisions of such subsidiaries, whose ownership of securities is disaggregated from that of the reporting business unit in accordance with such release.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Masterbrand Inc
(b)	Address of issuer's principal executive offices: 1 Masterbrand Cabinets Dr, Jasper, IN, 47546
Item 2.
(a)	Name of person filing: Vanguard Capital Management
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd,, Malvern, PA, 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP Number(s): 57638P104
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 6705627
(b)	Percent of class: 5.25 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 980135
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 6705627
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. Vanguard Capital Management, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Vanguard Capital Management

Signature:	Ashley Grim
Name/Title:	Head of Global Fund Administration
Date:	04/30/2026

FAQ

What stake does Vanguard hold in Masterbrand Inc (MBC)?

Vanguard beneficially owns 6,705,627 shares, or 5.25% of Masterbrand's common stock. The Schedule 13G lists this as the reported beneficial ownership and ties the stake to Vanguard Capital Management and certain affiliates.

Who holds voting and dispositive power for Vanguard's MBC shares?

Vanguard reports sole voting power for 980,135 shares and sole dispositive power for 6,705,627 shares. The filing distinguishes voting authority and dispositive (sale/dividend) authority in Item 4.

Does this Schedule 13G indicate activist intent by Vanguard for MBC?

No activist intent is stated; Schedule 13G is used for passive investors. The filing cites aggregation across Vanguard affiliates; a Form 13D would be used if intent to influence control were disclosed.

What CUSIP and filing date are shown for Masterbrand in this filing?

The CUSIP is 57638P104 and the signature date is 04/30/2026. The Cover and Item 1/Item 2 sections list the issuer, class, CUSIP, and the reporting person.

Which Vanguard entities are aggregated in the ownership statement?

The filing aggregates Vanguard Capital Management LLC and affiliates including Vanguard Asset Management Limited and others. The disclosure cites SEC Release No. 34-39538 to describe the aggregation across business divisions and funds.